Apparently made for Woodcraft by Pfeil, this modern version of a old carving tool has both convex and concave edges that meet at a point. You’d use the 7-1/2″ tool for carving details in hard-to-reach places.
Pfeil uses high-grade, hardened steel which they grind and polish to form the razor sharp edges. They finish the octagonal Acadia handle with a natural oil.
Available with blades of 3/8″, 1/2″ and 3/4″, all versions sell for $40. Shipping a $20 to $40 item from Woodcraft will run you $9, but as you buy more shipping gets more reasonable.
Abegglen Detail Knife [Woodcraft]